Pub Date : 2007-11-01DOI: 10.1524/ZKRI.2007.2007.SUPPL_26.351
J. Bednarčík, R. Nicula, V. Cojocaru, M. Stir, E. Burkel
Nanocrystalline powders with nominal composition Co42Fe22Sm22Nb7B4Cu2Ag1 were synthesized by high-energy ball-milling. In the as-milled state, the alloy specimens consist of nanocrystalline α-(Fe,Co). The formation of hard magnetic Sm2Co17 or Sm2Fe17 phases within the surrounding (Fe,Co) matrix during continuous heating was followed by in- situ X-ray diffraction experiments performed at the HASYLAB/DESY synchrotron radiation facility in Hamburg, Germany. The hard magnetic Sm2Co17 nanocrystalline phase forms at temperatures near to 800°C. The temperature evolution of the grain-size distribution was obtained from the integral breadth double-Voigt analysis of the broadening of the (Fe,Co)- matrix X-ray diffraction lines. The kinetics of microstructure coarsening seems to be influ- enced by grain boundary pinning (drag) effects correlated with the formation of a two-phase microstructure.
{"title":"Time resolvedin-situsynchrotron radiation diffraction investigation of grain-growth kinetics in magnetic nanocomposites","authors":"J. Bednarčík, R. Nicula, V. Cojocaru, M. Stir, E. Burkel","doi":"10.1524/ZKRI.2007.2007.SUPPL_26.351","DOIUrl":"https://doi.org/10.1524/ZKRI.2007.2007.SUPPL_26.351","url":null,"abstract":"Nanocrystalline powders with nominal composition Co42Fe22Sm22Nb7B4Cu2Ag1 were synthesized by high-energy ball-milling. In the as-milled state, the alloy specimens consist of nanocrystalline α-(Fe,Co). The formation of hard magnetic Sm2Co17 or Sm2Fe17 phases within the surrounding (Fe,Co) matrix during continuous heating was followed by in- situ X-ray diffraction experiments performed at the HASYLAB/DESY synchrotron radiation facility in Hamburg, Germany. The hard magnetic Sm2Co17 nanocrystalline phase forms at temperatures near to 800°C. The temperature evolution of the grain-size distribution was obtained from the integral breadth double-Voigt analysis of the broadening of the (Fe,Co)- matrix X-ray diffraction lines. The kinetics of microstructure coarsening seems to be influ- enced by grain boundary pinning (drag) effects correlated with the formation of a two-phase microstructure.","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82427934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKRI.2007.2007.SUPPL_26.209
G. Barr, W. Dong, C. Gilmore, A. Kern, A. Parkin, Chick C. Wilson
A method of validating organic and organometallic crystal structures solved using powder diffraction data is presented. It uses searches and comparisons with structures in the Cambridge Structural Database coupled with multivariate analysis and Clustering techniques. An example using sulphonamides is presented. The associated software (dSNAP) is available as a free download.
{"title":"Using the Cambridge Structural Database to validate powder structures","authors":"G. Barr, W. Dong, C. Gilmore, A. Kern, A. Parkin, Chick C. Wilson","doi":"10.1524/ZKRI.2007.2007.SUPPL_26.209","DOIUrl":"https://doi.org/10.1524/ZKRI.2007.2007.SUPPL_26.209","url":null,"abstract":"A method of validating organic and organometallic crystal structures solved using powder diffraction data is presented. It uses searches and comparisons with structures in the Cambridge Structural Database coupled with multivariate analysis and Clustering techniques. An example using sulphonamides is presented. The associated software (dSNAP) is available as a free download.","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83997561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKSU.2007.2007.SUPPL_26.105
C. Giannini, A. Cervellino, A. Guagliardi, F. Gozzo, D. Zanchet, T. Rocha, M. Ladisa
. The ability of tailoring the dimensional regime of nanoparticle ensembles represents a landmark achievement in nanoscience. A key aspect is, however, the development of appropriate methods of data analyses of these complex objects. We present, here, a new method for interpreting powder diffraction data, based on the use of the Debye Function and suitable to treat data collected on virtually any nanocrystalline material. The method has been presently limited to single-domain particles. Applications of technological interest are also discussed.
{"title":"A Debye function based powder diffraction data analysis method","authors":"C. Giannini, A. Cervellino, A. Guagliardi, F. Gozzo, D. Zanchet, T. Rocha, M. Ladisa","doi":"10.1524/ZKSU.2007.2007.SUPPL_26.105","DOIUrl":"https://doi.org/10.1524/ZKSU.2007.2007.SUPPL_26.105","url":null,"abstract":". The ability of tailoring the dimensional regime of nanoparticle ensembles represents a landmark achievement in nanoscience. A key aspect is, however, the development of appropriate methods of data analyses of these complex objects. We present, here, a new method for interpreting powder diffraction data, based on the use of the Debye Function and suitable to treat data collected on virtually any nanocrystalline material. The method has been presently limited to single-domain particles. Applications of technological interest are also discussed.","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76493778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKRI.2007.2007.SUPPL_26.593
A. Mesbah, C. Juers, M. François, E. Rocca, J. Steinmetz
{"title":"Structures of magnesium and zinc long aliphatic chains carboxylates","authors":"A. Mesbah, C. Juers, M. François, E. Rocca, J. Steinmetz","doi":"10.1524/ZKRI.2007.2007.SUPPL_26.593","DOIUrl":"https://doi.org/10.1524/ZKRI.2007.2007.SUPPL_26.593","url":null,"abstract":"","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74946427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKRI.2007.2007.SUPPL_26.241
R. Kužel, L. Nichtová, D. Herman, J. Šcha, J. Musil
{"title":"Growth of magnetron sputtered TiO2thin films studied by X-ray scattering","authors":"R. Kužel, L. Nichtová, D. Herman, J. Šcha, J. Musil","doi":"10.1524/ZKRI.2007.2007.SUPPL_26.241","DOIUrl":"https://doi.org/10.1524/ZKRI.2007.2007.SUPPL_26.241","url":null,"abstract":"","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78684067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKSU.2007.2007.SUPPL_26.33
A. Russell, E. Morris
{"title":"The complementary use of solid state NMR and XRD to solve zeolite structures","authors":"A. Russell, E. Morris","doi":"10.1524/ZKSU.2007.2007.SUPPL_26.33","DOIUrl":"https://doi.org/10.1524/ZKSU.2007.2007.SUPPL_26.33","url":null,"abstract":"","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79194148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKRI.2007.2007.SUPPL_26.599
J. V. Mechelen, R. Peschar, H. Schenk
{"title":"The crystal structures of the β1and β2polymorphs of mono-unsaturated triacylglycerols and cocoa butter determined from high resolution powder diffraction data","authors":"J. V. Mechelen, R. Peschar, H. Schenk","doi":"10.1524/ZKRI.2007.2007.SUPPL_26.599","DOIUrl":"https://doi.org/10.1524/ZKRI.2007.2007.SUPPL_26.599","url":null,"abstract":"","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80445787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKSU.2007.2007.SUPPL_26.159
H. Brokmeier, S. Yi, B. Schwebke, J. Homeyer
{"title":"In-situ analysis of crystallographic texture using high-energy X-rays","authors":"H. Brokmeier, S. Yi, B. Schwebke, J. Homeyer","doi":"10.1524/ZKSU.2007.2007.SUPPL_26.159","DOIUrl":"https://doi.org/10.1524/ZKSU.2007.2007.SUPPL_26.159","url":null,"abstract":"","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73233826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1524/ZKRI.2007.2007.SUPPL_26.369
D. Garipoli, P. Bergese, E. Bontempi, M. Minicucci, A. Cicco, L. Depero
All aluminium products come from melting processes. At the melting temperature, aluminium and its alloys are highly reactive with the metals and the refractories which line the furnace inside. Investigation of interactions of aluminium and its alloys with the refrac- tory materials upon heating is therefore an issue. In this paper this investigation is focused on the model system made of aluminium-silicon mixture at eutectic composition and corundum. In particular, the structural and microstructural features are investigated by high-temperature resolved X-ray diffraction (HTXRD) and bidimensional micro X-Ray diffraction (XRD 2 ). During cooling we followed the crystallization of aluminium and silicon and few single crystallites of a new phase, possibly related to Al19Fe5Si2, were detected by microXRD 2 .
{"title":"High temperature X-ray diffraction investigation of an aluminium-silicon- corundum system","authors":"D. Garipoli, P. Bergese, E. Bontempi, M. Minicucci, A. Cicco, L. Depero","doi":"10.1524/ZKRI.2007.2007.SUPPL_26.369","DOIUrl":"https://doi.org/10.1524/ZKRI.2007.2007.SUPPL_26.369","url":null,"abstract":"All aluminium products come from melting processes. At the melting temperature, aluminium and its alloys are highly reactive with the metals and the refractories which line the furnace inside. Investigation of interactions of aluminium and its alloys with the refrac- tory materials upon heating is therefore an issue. In this paper this investigation is focused on the model system made of aluminium-silicon mixture at eutectic composition and corundum. In particular, the structural and microstructural features are investigated by high-temperature resolved X-ray diffraction (HTXRD) and bidimensional micro X-Ray diffraction (XRD 2 ). During cooling we followed the crystallization of aluminium and silicon and few single crystallites of a new phase, possibly related to Al19Fe5Si2, were detected by microXRD 2 .","PeriodicalId":23897,"journal":{"name":"Zeitschrift Fur Kristallographie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81261358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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